JPS5698496A - Chromate treating method of zinc alloy-electroplated steel plate - Google Patents
Chromate treating method of zinc alloy-electroplated steel plateInfo
- Publication number
- JPS5698496A JPS5698496A JP85080A JP85080A JPS5698496A JP S5698496 A JPS5698496 A JP S5698496A JP 85080 A JP85080 A JP 85080A JP 85080 A JP85080 A JP 85080A JP S5698496 A JPS5698496 A JP S5698496A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- zinc alloy
- chromate
- electroplated steel
- chromate treating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To form a chromate film having excellent corrosion resistance and appearance, by a method wherein a zinc alloy-electroplated steel plate having one or more coprecipitated heavy metals is treated with a specified composition of a H2SO4- acidic chromate treating solution.
CONSTITUTION: A zinc alloy-electroplated steel plate having one or more coprecipitated heavy metals such as Co, Cr, Ni, Mo, and In is treated with the following chromate solution in which a Cr6+/Cr3+ ratio and heavy ion concentrations are specified. The process provides an excellent film without being affected by slight variations in the amount of an added etching agent. As the chromate treating solution, a H2SO4-acidic chromate treating solution with a total Cr content (calculated as anhydrous chromic acid) of 5W15g/l, a Cr6+/Cr3+ ratio of 0.8W6.0, and a concentration of heavy metal ions such as Zn2+, Co2+, and Ni2+ of 0.03W0.16g/l is used.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP85080A JPS5698496A (en) | 1980-01-10 | 1980-01-10 | Chromate treating method of zinc alloy-electroplated steel plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP85080A JPS5698496A (en) | 1980-01-10 | 1980-01-10 | Chromate treating method of zinc alloy-electroplated steel plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5698496A true JPS5698496A (en) | 1981-08-07 |
Family
ID=11485112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP85080A Pending JPS5698496A (en) | 1980-01-10 | 1980-01-10 | Chromate treating method of zinc alloy-electroplated steel plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5698496A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58120785A (en) * | 1982-01-11 | 1983-07-18 | Ebara Yuujiraito Kk | Colored chromate treatment for zinc-nickel alloy plated products |
JPS63143292A (en) * | 1986-12-05 | 1988-06-15 | Nippon Steel Corp | Production of electrolytically chromated steel sheet having excellent corrosion resistance |
JPS63250497A (en) * | 1987-04-06 | 1988-10-18 | Nisshin Steel Co Ltd | Post-treatment of alloyed hot dipped steel sheet |
-
1980
- 1980-01-10 JP JP85080A patent/JPS5698496A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58120785A (en) * | 1982-01-11 | 1983-07-18 | Ebara Yuujiraito Kk | Colored chromate treatment for zinc-nickel alloy plated products |
JPS6020467B2 (en) * | 1982-01-11 | 1985-05-22 | 荏原ユ−ジライト株式会社 | Colored chromate treatment method for zinc-nickel alloy plated products |
JPS63143292A (en) * | 1986-12-05 | 1988-06-15 | Nippon Steel Corp | Production of electrolytically chromated steel sheet having excellent corrosion resistance |
JPH0430476B2 (en) * | 1986-12-05 | 1992-05-21 | ||
JPS63250497A (en) * | 1987-04-06 | 1988-10-18 | Nisshin Steel Co Ltd | Post-treatment of alloyed hot dipped steel sheet |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Robertson | Molybdate and tungstate as corrosion inhibitors and the mechanism of inhibition | |
JPS55152183A (en) | Composition for forming zinc phosphate layer on metal surface | |
EP0591547A4 (en) | Surface-treated steel sheet reduced in plating defects and production thereof. | |
DE3569756D1 (en) | Process for the chemical-conversion treatment of zinc or its alloys, concentrate and bath for performing this process | |
DE3166602D1 (en) | Method for the production of phosphate coatings on iron and steel surfaces, and its use | |
JPS569386A (en) | Production of electro-zinc plated steel plate | |
JP2649380B2 (en) | Method for electrolytic pickling of stainless steel containing chrome | |
ZA839106B (en) | Phosphating process for zinc-plated metals | |
JPS5698496A (en) | Chromate treating method of zinc alloy-electroplated steel plate | |
DE4135524C2 (en) | Method and means for chromating surfaces made of zinc or cadmium or alloys thereof | |
AU597061B2 (en) | Corrosion resistant coating | |
Abd El Haleem | Dissolution Current and Pitting Potential of Zinc in KOH Solutions in Relation to the Concentration of Aggressive Ions | |
JPS5531121A (en) | Chrome plating bath | |
JPS5638494A (en) | Surface-treated steel material with high corrosion resistance | |
JPS57192295A (en) | Surface treated steel sheet of excellent painting property | |
ES274253A1 (en) | Improvements relating to the phosphate-coating of metals | |
JPS5629680A (en) | Surface treatment in annealing line | |
JPS5579891A (en) | Preparation of tin plated steel sheet | |
JPS57192294A (en) | Manufacture of surface treated steel strip for welded can | |
DE2807360C2 (en) | ||
RU93013243A (en) | METHOD FOR PRODUCING PHOSPHATE COATING | |
GB2003191A (en) | Metal phosphating process | |
Dinnappa | Role of Cyanide Ions in Relation to Copper Corrosion and Inhibition | |
JPS5562175A (en) | Chemical treating method for manganese-plated steel material | |
JPS5641387A (en) | Treating agent and treating method for lustrous chromate |